Also, I had a question in general... for parents of older children, when was small parts no longer a concern for a chocking hazard for you? Did you find that your kids were pretty on track with that or did they stop mouthing objects earlier on?
Actually, it has been sort of backwards for us. DD3
never put things in her mouth as a baby (not even food ;)), and only rarely did so as a toddler. We had all sorts of teethers for her, but she was just totally uninterested in them. NOW that she's 3, and knows all about choking hazards, I catch her once in a while pretending that some small object is food, putting it into her mouth, and running around with it in there.

Of course now that she's 3, there's also no way of keeping choking hazards away from her. We just try to remind her not to put things in her mouth that she could choke on and not to run with anything (even food) in her mouth.